document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=671653>Question 671653</A>: <I><SPAN STYLE=\"word-break: break-all;\"> cos^2theta - sin^2theta <BR>\n" );
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document.write( "Cos^2theta + sin theta(cos theta)  \r<BR>\n" );
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document.write( "I am asked to show how this equals to 1 - tan theta  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #417504 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=417504\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (cos^2(a)-Sin^2(a))/(cos^2a+sina.cosa))\r<BR>\n" );
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document.write( "((cosa+sina)(cosa-sina))/(cosa(cosa-sina)<BR>\n" );
document.write( "(cosa-sina)/cosa\r<BR>\n" );
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document.write( "(cosa/cosa)-(sina/cos))\r<BR>\n" );
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document.write( "1-tana\r<BR>\n" );
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document.write( " </SPAN>\n" );
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